fel·​site ˈfel-ˌsīt How to pronounce felsite (audio)
: a dense igneous rock consisting almost entirely of feldspar and quartz
felsitic adjective

Word History


felspar + -ite

First Known Use

1794, in the meaning defined above

Time Traveler
The first known use of felsite was in 1794

Dictionary Entries Near felsite

Cite this Entry

“Felsite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/felsite. Accessed 25 Apr. 2024.

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